开启http_cache=true 会触发panic

[bbaobelief]

问题

服务端开启http_cache=true，访问域名解析地址会触发panic

#cache
http_cache=true
http_cache_length=100

版本

[root@instance-tw conf]# nps -version
Version: 0.26.6
Core version: 0.26.0

错误

Apr 15 12:04:43 instance-tw nps: panic: runtime error: invalid memory address or nil pointer dereference
Apr 15 12:04:43 instance-tw nps: [signal SIGSEGV: segmentation violation code=0x1 addr=0x10 pc=0x98fe99]
Apr 15 12:04:43 instance-tw nps: goroutine 67 [running]:
Apr 15 12:04:43 instance-tw nps: ehang.io/nps/server/proxy.(*httpServer).handleHttp.func2(0xc00018a730, 0xc00018a70d, 0xc000198e00, 0xc0001f6780, 0xc0004d76d0, 0xc0000c8f30, 0xc0004d76d8)
Apr 15 12:04:43 instance-tw nps: /home/travis/gopath/src/github.com/ehang-io/nps/server/proxy/http.go:184 +0x1b9
Apr 15 12:04:43 instance-tw nps: created by ehang.io/nps/server/proxy.(*httpServer).handleHttp
Apr 15 12:04:43 instance-tw nps: /home/travis/gopath/src/github.com/ehang-io/nps/server/proxy/http.go:169 +0xb12
Apr 15 12:04:43 instance-tw systemd: Nps.service: main process exited, code=exited, status=2/INVALIDARGUMENT
Apr 15 12:04:43 instance-tw systemd: Unit Nps.service entered failed state.
Apr 15 12:04:43 instance-tw systemd: Nps.service failed.

[ffdfgdfg]

emmm这个问题比较难改，可以把http_cache_length设大减少这种情况